Autonomous System details

AS18420

National Central University  ·  ncu.edu.tw

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AS18420 – National Central University

Field Value
Country Taiwan
Website ncu.edu.tw
Hosted domains 64
IPv4 addresses 65,536
IPv6 addresses 0
ASN type Education
Registry apnic
Updated 4 months ago on Nov 06, 2025
Netblock Company Num of IPs
140.115.0.0/16 Ministry of Education Computer Center 65,536

There are no known IPv6 addresses belonging to this network

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WHOIS Details


                                                ASHandle:       AS18420
                                                OrgID:          AS18420
                                                ASName:         AS18420
                                                ASNumber:       AS18420
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There are 64 domain names hosted across 58 IP addresses on this ASN.

IP Address Domain Domains on this IP
140.115.37.34 ██████ 3
140.115.95.98 ██████████ 2
140.115.120.175 ██████████ 2
140.115.126.191 ██████████ 2
140.115.35.138 ████████ 2
140.115.65.172 ██████ 2
140.115.110.54 ██████████ 2
140.115.16.181 ███████ 1
140.115.54.250 ██████████ 1
140.115.127.147 ██████████ 1

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Peers

There are 2 peers for this ASN.

Peers Name
AS18185 NTCU
AS7539 National Center for High-performance Computing
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS18185 NTCU
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

231 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
140.115.177.254 AS18420 National Central University 2.94ms from Taipei, TW
140.115.224.11 AS18420 National Central University 2.83ms from Taipei, TW
140.115.157.254 AS18420 National Central University 3.33ms from Taipei, TW
140.115.188.87 AS18420 National Central University 2.77ms from Taipei, TW
140.115.223.254 AS18420 National Central University 2.97ms from Taipei, TW
140.115.135.108 AS18420 National Central University 2.63ms from Taipei, TW
140.115.56.70 AS18420 National Central University 2.75ms from Taipei, TW
140.115.131.254 AS18420 National Central University 2.98ms from Taipei, TW
140.115.24.254 AS18420 National Central University 2.86ms from Taipei, TW
140.115.54.135 AS18420 National Central University 2.67ms from Taipei, TW
140.115.100.15 AS18420 National Central University 2.66ms from Taipei, TW
140.115.209.254 AS18420 National Central University 3.12ms from Taipei, TW
140.115.117.199 AS18420 National Central University 2.62ms from Taipei, TW
140.115.5.242 AS18420 National Central University 2.69ms from Taipei, TW
140.115.129.254 AS18420 National Central University 3.20ms from Taipei, TW
140.115.14.254 AS18420 National Central University 3.07ms from Taipei, TW
140.115.27.254 AS18420 National Central University 2.90ms from Taipei, TW
140.115.236.254 AS18420 National Central University 3.10ms from Taipei, TW
140.115.163.254 AS18420 National Central University 2.88ms from Taipei, TW
140.115.103.245 AS18420 National Central University 2.79ms from Taipei, TW
140.115.58.2 AS18420 National Central University 3.17ms from Taipei, TW
140.115.91.254 AS18420 National Central University 2.91ms from Taipei, TW
140.115.87.28 AS18420 National Central University 2.67ms from Taipei, TW
140.115.202.59 AS18420 National Central University 3.00ms from Taipei, TW
140.115.192.15 AS18420 National Central University 2.76ms from Taipei, TW

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
83.111.253.228 AS5384 Emirates Internet 3.78ms from Al Fujairah City, AE
178.117.141.164 AS6848 Telenet BV 5.58ms from Brussels, BE
208.43.36.228 AS36351 IBM Cloud 1.01ms from Dallas, US
20.228.46.116 AS8075 Microsoft Corporation 0.44ms from Des Moines, US
72.145.24.4 AS8075 Microsoft Corporation 0.16ms from Dublin, IE
98.59.96.52 AS7922 Comcast Cable Communications, LLC 5.49ms from Minneapolis, US
75.99.231.20 AS6128 Cablevision Systems Corp. 5.01ms from New York City, US
203.82.154.196 AS3561 CenturyLink Communications, LLC 1.37ms from Osaka, JP
117.200.222.116 AS9829 National Internet Backbone 15.54ms from Saint Thomas Mount, IN
60.21.35.244 AS4837 CHINA UNICOM China169 Backbone 7.73ms from Tieling, CN
161.189.157.148 AS135629 Ningxia West Cloud Data Technology Co.Ltd. 1.38ms from Zhongwei, CN
94.65.118.68 AS6799 Ote SA (Hellenic Telecommunications Organisation) 0.86ms from Athens, GR
128.173.183.196 AS1312 Virginia Polytechnic Institute and State Univ. 0.35ms from Blacksburg, US
62.235.0.68 AS5432 Proximus NV 2.17ms from Brussels, BE
65.189.12.4 AS10796 Charter Communications Inc 15.19ms from Cleveland, US
74.112.95.84 AS17378 TierPoint, LLC 6.62ms from Dallas, US
89.93.161.132 AS5410 Bouygues Telecom SA 7.20ms from Frankfurt am Main, DE
193.72.145.20 AS6730 Sunrise GmbH 1.98ms from Geneve, CH
85.99.27.84 AS9121 Turk Telekomunikasyon Anonim Sirketi 19.53ms from Istanbul, TR
34.125.160.116 AS396982 Google LLC 0.13ms from Las Vegas, US
104.223.52.116 AS36352 HostPapa 0.33ms from Los Angeles, US
107.202.226.180 AS7018 AT&T Enterprises, LLC 2.38ms from Los Angeles, US
131.128.252.4 AS14348 University of Rhode Island 6.30ms from New York City, US
78.197.97.148 AS12322 Free SAS 1.36ms from Paris, FR
144.196.16.164 AS13445 Cisco Webex LLC 19.33ms from San Jose, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 140.115.203.254
traceroute to 140.115.203.254 (140.115.203.254): 64 hops max, 52 byte packets
1 [AS199524] 92.223.62.1 0.141 ms
2 *
3 *
4 [AS34170] 212.47.154.2 0.707 ms
5 *
6 [AS9002] 87.245.251.26 69.566 ms
7 [AS9002] 87.245.232.107 238.658 ms
8 [AS9002] 87.245.251.209 237.964 ms
9 [AS4780] 192.72.155.205 283.411 ms
10 [AS4780] 139.175.57.106 286.192 ms
11 [AS4780] 192.72.251.38 286.393 ms
12 [AS18185] 211.76.255.201 287.299 ms
13 *
14 [AS18420] 140.115.203.254 277.735 ms
Measurement taken from IPinfo ProbeNet in Baku, AZ
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS18420 at robtex.

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